<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script src="./lib/vue-2.6.10/dist/vue.js"></script>
  <style>
    .v-enter,
    .v-leave-to{
      opacity: 0;
      transform: translateX(150px)
    }
    .v-enter-active,
    .v-leave-active {
      transition: all 0.5s ease;
    }
  </style>
  
</head>
<body>
    
  <div id="app">
    <a href="" @click.prevent="comName=login">登陆组件</a>
    <a href="" @click.prevent="comName=register">注册组件</a>
    
    <transition mode="out-in">
        <component :is="comName"></component>
    </transition>
    

  </div>

  <script>
    Vue.component('login',{
      template: '<h3>登陆组件</h3>',
    })
    Vue.component('register',{
      template: '<h3>注册组件</h3>',
     
    })
    var vm = new Vue({
      el: '#app',
      data: {
        flag: true,
        comName: ''
      }

    })
  </script>
</body>
</html>